Panasonic GX8 has a
20.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor and features Venus Engine processor. On the other hand, Olympus E-PM2 has a
16.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor .
Below you can see the GX8 and E-PM2 sensor size comparison.
Panasonic GX8 and Olympus E-PM2 have the same sensor sizes so they will provide same level of control over the depth of field when used with same focal length and aperture. On the other hand, since Olympus E-PM2 has 26% larger pixel area (14.12µm2 vs 11.16µm2) compared to Panasonic GX8, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.
DxOMark Sensor Scores
Both Panasonic GX8 and Olympus E-PM2 sensors have been tested by DxoMark. DxoMark scores camera sensors for color depth (DXO Portrait), dynamic range (DXO Landscape) and low-light sensitivity (DXO Sports), and also gives them an overall score. Of the two cameras that we are comparing, GX8 has scored 75, 3 points higher than E-PM2.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Panasonic GX8 |
75 |
23.5 bits |
12.6 Evs |
806 ISO |
Olympus E-PM2 |
72 |
22.7 bits |
12.2 Evs |
932 ISO |